<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref } from 'vue'
//控制注册与登录表单的显示， 默认显示注册
const isRegister = ref(false)
// 定义注册表单数据
const registerData = ref({
    username: '',
    password: '',
    rePassword: ''
})
// 定义登录表单数据
const loginData = ref({
    username: '',
    password: ''
})
// 定义清空表单数据
const clearData = () => {
    registerData.value = {
        username: '',
        password: '',
        rePassword: ''
    }
    loginData.value = {
        username: '',
        password: ''
    }
}
// 定义注册表单校验规则
const rePasswordValid = (rule, value, callback) => {
    if (value === '') {
        callback(new Error('请再次输入密码'))
    } else if (value !== registerData.value.password) {
        callback(new Error('两次密码不一致'))
    } else {
        callback()
    }
}
const rules = ref({
    username: [
        { required: true, message: '请输入用户名', trigger: 'blur' },
        { min: 5, max: 16, message: '用户名的长度必须为5-16位', trigger: 'blur' }
    ],
    password: [
        { required: true, message: '请输入密码', trigger: 'blur' },
        { min: 5, max: 16, message: '密码的长度必须为5-16位', trigger: 'blur' }
    ],
    rePassword: [
        { validator: rePasswordValid, trigger: 'blur' }
    ]
})
import { registerService, loginService } from '@/api/user.js'
import { ElMessage } from 'element-plus'
import { useRouter } from 'vue-router'
import { useTokenStore } from '@/stores/token'
const router = useRouter()
const tokenStore = useTokenStore()
// 调用注册接口
const register = async() => {
    await registerService(registerData.value)
    clearData()
    ElMessage.success('注册成功!')
}
// 调用登录接口
const login = async() => {
    const res = await loginService(loginData.value)
    // 存储token
    tokenStore.setToken(res.data)
    ElMessage.success('登录成功!')
    // 跳转到首页
    router.push('/')
}
</script>

<template>
    <el-row class="login-page">
        <el-col :span="5" :offset="9" class="form">
            <!-- 注册表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="registerData" :rules="rules">
                <el-form-item class="center-title">
                    <h1>注册</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="registerData.password"></el-input>
                </el-form-item>
                <el-form-item  prop="rePassword">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码" v-model="registerData.rePassword"></el-input>
                </el-form-item>
                <!-- 注册按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="register()">
                        注册
                    </el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = false;clearData()">
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>
            <!-- 登录表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-else :model="loginData" :rules="rules">
                <el-form-item class="center-title">
                    <h1>登录</h1>
                </el-form-item>
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="loginData.username"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码" v-model="loginData.password"></el-input>
                </el-form-item>
                <el-form-item class="flex">
                    <div class="flex">
                        <el-checkbox>记住我</el-checkbox>
                        <el-link type="primary" :underline="false">忘记密码？</el-link>
                    </div>
                </el-form-item>
                <!-- 登录按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="login()">登录</el-button>
                </el-form-item>
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = true;clearData()">
                        注册 →
                    </el-link>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<style lang="scss" scoped>
.center-title {
    display: grid;
    place-items: center; // 水平和垂直居中
}
/* 样式 */
.login-page {
    height: 100vh;
    background-color: #c5e4e2;

    .form {
        display: flex;
        flex-direction: column;
        justify-content: center;
        user-select: none;

        .title {
            margin: 0 auto;
        }

        .button {
            width: 100%;
        }

        .flex {
            width: 100%;
            display: flex;
            justify-content: space-between;
        }

    }


}
</style>